The XEH InitPost event only needs to be added if the `GVAR(autoAddObjects)` setting is enabled. This change will save on overhead when the setting is disabled and also removes some complexity from the function that runs in response to the event.
Replaces display size and position defines with macros for readability and compactness.
Changes naming convention of functions and displays to distinguish categories and make more readable.
Converts the global set skill module to use display events rather than waiting in a loop for the module to be set and confirmed.
